In 2010 The Dominican University’s Graduate School of Library and Information Studies released the results of a three-year study The Dominican Study: Public Library Summer Reading Programs Close the Reading Gap that confirmed what many librarians have long suspected: students who take part in their local library’s summer reading program significantly improve their reading skills. The study found that kids who participate in their library’s summer reading program are 52 Lexile points ahead of their peers who do not. Summer reading programs also assist with learning retention between school years. So instead of losing knowledge and skills during the summer months, kids who attend reading programs actually show increases in knowledge and skills!
Check out a great article about the study in School Library Journal.